Explore our industrial-grade refrigeration assemblies, dual valves, filter driers, and high-precision fittings designed to withstand the highest system pressures.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is strategically situated in Xiangshan, Ningbo, a highly connected logistics hub in Eastern China. Founded in 1988, our predecessor was the esteemed Xiangshan Refrigeration Accessories Factory of Zhejiang University, inheriting a strong technical foundation of academic precision and mechanical engineering excellence.
Over three decades of manufacturing mastery, we have expanded our capacity to become a national high-tech enterprise. Our core offerings encompass high-precision manifold gauge valves, filter driers, check valves, custom air conditioner valves, condensers, and fine brass/copper connector assemblies. We operate under the reputable domestic brand "Lingshan", widely praised for quality, reliability, and robust performance in extreme thermal stress environments.
Quality Certified System
Eco & Safety Compliance
In 2012, we officially branded our specialized product categories under the "Taojun" marque, releasing next-generation condensers, high-durability stop valves, and premium copper refrigeration components. Today, we are proud Tier-1 suppliers to household appliance brands globally, including Haier, Midea, Gree, Whirlpool, Electrolux, Huarui, and Xinfei.
Our international logistics footprint covers more than 50 countries, with major export routes directly linking our Ningbo plant to key regions in Europe, North America, South America, Southeast Asia, the Middle East, and Africa. We optimize our production scheduling via MES intelligent workshops to provide guaranteed lead times and responsive global logistics coordination.
Our manifold gauges and copper filters are engineered to perform under extreme pressures, protecting modern HVAC/R systems from acid, moisture, and particulate contaminations.
We leverage advanced automated argon arc welding and vacuum furnace brazing. This eliminates microscopic pinholes, ensuring absolute leak-free joints capable of holding high-pressure synthetic and natural refrigerants.
Equipped with premium 3A/4A molecular sieve blends and activated carbon layers. The molecular sieves offer water absorption capacities ≥20%, absorbing harmful acids generated during high-temperature compressor operations.
Utilizing high-purity red copper pipes (C12200) and premium dezincification-resistant brass alloys. These materials exhibit exceptional anti-oxidation properties and withstand mechanical stresses up to 60 Bar.
Discover the core systems, imported technical hardware, and strict QA protocols that enable us to achieve superior durability and reliability across all HVAC/R parts.
Our core production and high-tolerance threading lines utilize machinery imported directly from Germany. This ensures thread precision down to ±0.01mm, guaranteeing leak-free fittings for manifold gauges and valve connections.
Our research and development team is bolstered by 15 senior engineers, including active professors and doctors from the University of Science and Technology of China (USTC), spearheading gas dynamics and thermal transfer research.
Our smart film products integrate premium liquid crystal spacers and ITO film imported directly from Japan to ensure zero color difference and exceptional consistency, withstanding environmental temperatures up to 90°C.
All component designs undergo high & low temperature testing at 75°C and -35°C for 500 hours, followed by thermal shock cycles between 10°C and 90°C to prevent stress cracking in industrial systems.
We test our smart electrical elements and controls under high voltage limits, running a continuous 24-hour load aging test to confirm zero breakdown prior to export packaging.
Whether you require custom pressure scales (PSI, Bar, kPa, MPa), alternative gas refrigerant curves (R32, R410A, R290, R134a, R744 CO2), or custom branded faceplates, our production tooling can accommodate specialized requests.
Ningbo represents the absolute pinnacle of global advanced manufacturing and raw material coordination. With integrated access to raw copper smelting facilities, high-grade brass bar stock suppliers, and chemical suppliers of synthetic 3A molecular sieves, Taojun Refrigeration optimizes procurement times and maintains price stability for partners worldwide.
By integrating local material supply networks with our factory’s automated MES system, we track raw material heat codes from incoming ingot inspection to finished machined bodies. Our geographical proximity to the Ningbo-Zhoushan Port—the world’s busiest port by cargo tonnage—means we can load and ship ocean containers within 72 hours of production sign-off.
Serving global markets requires more than just high-quality hardware; it demands strict compliance with regional safety frameworks and environmental guidelines.
Taojun is fully certified under international frameworks, helping distributors streamline their localized compliance audits. We offer full regulatory support, including CE marking for European markets, UL certification for the United States, and RoHS compliance for restricted chemical use.
Chemical Safety
Electronics Disposal
Factory Quality
Additionally, we supply custom-engineered operational manuals, multi-language packaging, and calibrated dial options (Fahrenheit scaling for NA, Celsius for EU/Asia) to suit local installer expectations.
From a localized laboratory workshop to an international HVAC/R equipment manufacturing powerhouse.
Factory Construction & Scaling: Xiangshan facility expands industrial footprint, investing heavily in dedicated extrusion presses and precision casting units to secure domestic market leadership.
MES Intelligent Workshop: Introduction of fully integrated workshop management systems, tracking heat treatment variables, material allocations, and batch quality parameters electronically.
Smart Manifold Valves & Sustainability: Breakthrough deployment of next-generation low-leakage manifold valves compatible with R744 (CO2) and hydrogen carrier systems, driving carbon footprint reductions.
A global brand is sustained by its cultural foundations. We fully realize that corporate culture takes root through consistent impact, slow infiltration, and systemic integration. Over decades, Taojun has defined its competitive edge through four pillars:
Adhering strictly to standard chemistry analysis, verified material specifications, and open third-party testing parameters.
Encouraging our development teams to design unique filter structures and advanced low-resistance refrigerant flow channels.
Minimizing waste in production, offering eco-compliant brazing materials, and advancing natural refrigerant compatibility.
Our engineering portfolio plays a critical role in cooling infrastructure globally, supporting systems from consumer products to heavy industrial equipment.
Every product is manufactured to international standards. Scan our verified certifications and explore our laboratory environment.
Our manufacturing plant is officially audited and certified (Registration No.: 41325Q00065R0S) for the design and production of copper filter driers, copper/brass access valves, and condensers. These records can be verified at any time on the official CNCA database (www.cnca.gov.cn).
Main Certificate
Detailed Scope
To ensure reliability, our physical laboratories run daily stress tests:
Verification documents confirming our compliance with chemical directives, electrical safety, and quality management systems.
UL Certification Document
EU RoHS Directive
Zhongci Quality ISO Seal
National High-Tech Award
Factory Quality System
Providing engineering assistance, technical support, and logistical guarantees to keep your projects on track.
Direct communication with our engineering team, with inquiries responded to within 8 hours. We assist you in drafting exact drawings, specifying materials, and choosing the right products.
We provide comprehensive installation guides, system integration reviews, and on-site troubleshooting recommendations to help make system installation smooth and efficient.
Every product batch is backed by a one-year structural warranty. We provide lifetime technical support and maintain historical quality archives to track performance over time.
Get answers to common technical, manufacturing, and logistical questions regarding global HVAC/R component procurement.
Explore our high-purity elbow fittings, brazing rods, charging safety valves, and specialized insulation products designed for reliable refrigeration and AC installations.
Taojun
